Base station antenna unit and base station antenna array constructed therefrom

Abstract

The present invention relates to a base station antenna unit and a base station antenna array constructed therefrom. The base station antenna unit comprises a radiation plate, a feed plate and a reflector plate. A support seat is arranged on the feed plate, and at least two bayonet columns are connected to the top of the support seat. The bayonet column is processed with a bayonet recessed into the bayonet column, and the top of the bayonet column is processed with a guide slope inclined toward the bayonet. A clamping hole configured for the bayonet column is processed on the radiation plate. A clamping tongue piece is elastically connected to the edge of the clamping hole. The radiation plate is fixedly connected to the support seat by means of the clamping tongue piece that is clamped into the bayonet, so as to ensure that the radiation plate can be coupled with the port of the feed network. The feed plate and the support seat of the present invention are integrally formed, and the process and structure are simple; the radiation plate is installed on the support seat through a buckle structure, and the fixing structure is firm. There is no welding in the entire antenna unit assembly process, and the consistency is high. The assembly is simple, the production efficiency is improved, the product yield is improved, and the product cost is reduced.

Description

Technical Field

[0001] The present invention relates to wireless communication equipment, and in particular to an antenna device used in wireless communication base station equipment. Background Art

[0002] Prior art An antenna for a wireless communication base station, such as Figure 6 As shown, it includes a radiation sheet 291, a dielectric support plate 292 and a feed plate 293. The dielectric support plate 292 is connected between the radiation sheet 291 and the feed plate 293 by splicing, welding or other connection methods. Its structure is prone to installation errors and low production yield. In addition, the prior art antenna uses a printed circuit method to construct a feed circuit, which further complicates the assembly of the board and increases the production cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to avoid the deficiencies of the prior art and to propose a base station antenna unit which is easy to install and low in cost and a base station antenna array constructed therefrom.

[0004] The present invention can solve the technical problem by adopting the following technical solutions:

[0005] A base station antenna unit is designed and manufactured, comprising a radiation plate, a feed plate and a reflector. A support seat is arranged on the feed plate, and at least two bayonet columns are connected to the top of the support seat. The support seat and the feed plate are integrally formed by injection molding. A feed network is laid on the feed plate and the support seat, and the port end of the feed network is arranged on the top surface of the support seat. The bayonet column is processed with a bayonet recessed into the bayonet column, and the top end of the bayonet column is processed with a guide slope inclined toward the bayonet. A clamping hole configured for the bayonet column is processed on the radiation plate. A clamping tongue piece is elastically connected to the edge of the clamping hole. When installing the radiation plate, the radiation plate is pressed against the top of the support seat, and the top end of the bayonet column is inserted into the clamping hole of the radiation plate. With the help of the guide slope, the clamping tongue piece is guided to elastically deform and move toward the bayonet. With the help of the elastic restoring force, the clamping tongue piece passing through the bayonet extends into the bayonet, so that the radiation plate is fixedly connected to the support seat by means of the clamping tongue piece clamped into the bayonet, ensuring that the radiation plate can be coupled with the port of the feed network.

[0006] Specifically, the support seat includes two columnar support sub-columns. At least one bayonet column is arranged on each support sub-column. Around the axis of the support sub-column, the support sub-column includes a rectangular inner facade, a curved outer facade, and two rectangular side facades respectively connected between the inner facade and the outer facade. The inner facades of the two support sub-columns are arranged opposite to each other and are parallel to each other.

[0007] More specifically, four bayonet posts are arranged around the axial direction of the support seat, the bayonet posts of which are all oriented toward the outside of the support seat, and the bayonet posts of adjacent bayonet posts are oriented perpendicularly to each other.

[0008] Furthermore, the ports of the feeding network arranged on the support base are two groups of mutually orthogonal microstrip balun ports.

[0009] The present invention can also solve the technical problem by adopting the following technical solutions:

[0010] A base station antenna array is designed and manufactured, including a feed plate, a reflector plate, and at least two radiation plates. The feed plate is provided with support seats respectively configured for each radiation plate, all support seats are arranged in an array, and each support seat constructs an antenna unit. The support seat and the feed plate are integrally formed by an injection molding process. A feed network is laid on the feed plate and the support seat, and the port ends of the feed network are respectively arranged on the top surface of the support seat. At least two bayonet columns are connected to the top of the support seat. The bayonet column is processed with a bayonet recessed into the bayonet column, and the top end of the bayonet column is processed with a guide slope inclined toward the bayonet. A clamping hole configured for the bayonet column is processed on the radiation plate. A clamping tongue piece is elastically connected to the edge of the clamping hole. When installing the radiation board, the radiation board is pressed against the top of the support base configured for the radiation board, and the top of the bayonet column is inserted into the bayonet hole of the radiation board. The guide bevel is used to guide the elastic deformation of the latch piece and move toward the bayonet. With the help of the elastic restoring force, the latch piece passing through the bayonet extends into the bayonet, so that the radiation board is fixedly connected to the support base of the feeding board by means of the latch piece inserted into the bayonet, ensuring that the radiation board can be coupled with the port of the feeding network.

[0011] Specifically, the support seat includes two columnar support sub-columns. At least one bayonet column is arranged on each support sub-column. Around the axis of the support sub-column, the support sub-column includes a rectangular inner facade, a curved outer facade, and two rectangular side facades respectively connected between the inner facade and the outer facade. The inner facades of the two support sub-columns are arranged opposite to each other and are parallel to each other.

[0012] More specifically, four bayonet posts are arranged around the axial direction of the support seat, the bayonet posts of which are all oriented toward the outside of the support seat, and the bayonet posts of adjacent bayonet posts are oriented perpendicularly to each other.

[0013] Furthermore, the ports of the feeding network arranged on each support seat are two groups of mutually orthogonal microstrip balun ports.

[0014] In order to enhance the mechanical strength of the feed board, a feed board edge ridge is provided at the edge of the feed board. At least one feed board reinforcement ridge is provided in the feed board, with both ends connected to the feed board edge ridge, so as to divide the feed board into at least two feed blocks. At least one support seat is provided in the feed block.

[0015] In order to enhance the mechanical strength of the reflector, a reflector edge ridge is provided at the edge of the reflector. A reflector reinforcement ridge whose two ends are connected to the reflector edge ridge is provided inside the reflector. The reflector is fixedly mounted at the bottom of the feeder plate, and the position of the reflector edge ridge corresponds to the position of the feeder edge ridge, and the position of the reflector reinforcement ridge corresponds to the position of the feeder reinforcement ridge.

[0016] Compared with the prior art, the technical effects of the "base station antenna unit and base station antenna array constructed therefrom" of the present invention are:

[0017] The feed board and the support base are integrally formed, with simple process and structure; the radiation board is installed on the support base through a snap-on structure, and the fixing structure is firm. The entire antenna unit assembly process is free of welding, with high consistency and simple assembly, which improves production efficiency, increases product yield, and reduces product cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of an axonometric projection of a first embodiment of the present invention in an exploded state;

[0019] Figure 2 is an axonometric projection schematic diagram of the support base 22, the bayonet column 23 and a part of the feed network 24 of the first embodiment;

[0020] Figure 3 is a schematic diagram of an orthographic top view of the radiation plate 21 of the first embodiment;

[0021] Figure 4 is a schematic cross-sectional view in the main viewing direction of the orthographic projection of the first embodiment;

[0022] Figure 5 is a schematic diagram of an axonometric projection of a second embodiment of the present invention in an exploded state;

[0023] Figure 6 The present invention is a schematic diagram of an axonometric projection of an antenna in a decomposed state for a wireless communication base station in the prior art. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments shown in the accompanying drawings.

[0025] The present invention proposes a base station antenna unit, such as Figure 1 , Figure 2 and Figure 5As shown, it includes a radiation plate 21, a feeding plate 25 and a reflecting plate 26. A support base 22 is arranged on the feeding plate 25, and at least two bayonet columns 23 are connected to the top of the support base 22. The support base 22 and the feeding plate 25 are integrally formed by an injection molding process. A feeding network 24 is laid on the feeding plate 25 and the support base 22 by means of a selective plastic electroplating process, and the port ends AB and CD of the feeding network 24 are arranged on the top surface of the support base 22. The bayonet column 23 is processed with a bayonet 231 recessed into the interior of the bayonet column 23, and the top end of the bayonet column 23 is processed with a guide slope 232 inclined toward the bayonet 231. As shown Figure 3 As shown, the radiation board 21 is processed with a clamping hole 211 configured for the bayonet column. The edge of the clamping hole 211 is elastically connected with a clamping tongue piece 212. When installing the radiation board 21, the radiation board 21 is pressed against the top of the support seat 22, and the top of the bayonet column 23 is inserted into the clamping hole 211 of the radiation board 21. The clamping tongue piece 212 is guided by the guide inclined surface 232 to elastically deform and move toward the bayonet 231. With the help of elastic restoring force, the clamping tongue piece 212 passing through the bayonet 231 extends into the bayonet 231, so that the radiation board 21 is fixedly connected to the support seat 22 by means of the clamping tongue piece 212 clamped into the bayonet 231, ensuring that the radiation board 21 can be coupled with the ports AB and CD of the feed network 24.

[0026] The feed plate 25 and the support base 22 of the present invention are integrally formed, with simple process and structure and low cost. The radiation plate 21 is mounted on the support base 22 by a snap-fit ​​structure, the fixing structure is firm, the whole antenna unit assembly process is free of welding, high consistency, simple assembly, improved production efficiency, increased product yield, and reduced product cost.

[0027] The first embodiment of the present invention is as follows Figure 1 , Figure 2 and Figure 4 As shown, the support base 22 includes two columnar support sub-columns 221. Each support sub-column 221 is provided with at least one bayonet column 23. Figure 2 As shown, the support base 22 takes the straight line O1O2 as the axis. The two supporting sub-columns 221 are symmetrically arranged with the axis O1O2 of the support base 22 as the axis of symmetry. The two supporting sub-columns 221 take the straight line P1P2 and the straight line P3P4 as their own axes respectively. Surrounding the axis of the supporting sub-column 221, the supporting sub-column 221 includes a rectangular inner facade 2211, a curved outer facade 2212, and two rectangular side facades 2213 respectively connected between the inner facade 2211 and the outer facade 2212. The inner facades 2211 of the two supporting sub-columns 221 are arranged opposite to each other and parallel to each other. The support base 22 structure of the first embodiment cooperates with the orthogonal port AB and port CD of the feeding network 24 to achieve the supporting function of the support base 22 on the radiation plate 21 with a simple structure, and provide port support for the feeding network 24.

[0028] The first embodiment of the present invention is as follows Figures 1 to 4 As shown, four bayonet posts 23 are arranged around the axial direction O1O2 of the support seat 22. Figure 2 As shown, the bayonet holes 231 of the bayonet holes 23 are all oriented toward the outside of the support base 22, and the bayonet holes 231 of adjacent bayonet holes 23 are oriented perpendicular to each other. Figure 2 As shown, the directions Q1Q2 and Q3Q4 of the bayonet 231 of the two opposite bayonet columns 23 are parallel to each other. The bayonet 231 of the adjacent bayonet columns 23 are perpendicular to each other around the axis O1O2 of the support base 22, which is beneficial to the line setting of the feed network 24 and helps to form a feed signal structure that can suppress interference.

[0029] In order to ensure balanced signal output, the first embodiment of the present invention is as follows: Figure 2 As shown, the port AB and the port CD of the feeding network 24 disposed on the support base 22 are two sets of mutually orthogonal microstrip balun ports. The feeding line of the feeding network 24 smoothly transitions along the surface of the support base 22 without sharp corners, which is beneficial to the feedback of the antenna signal.

[0030] The present invention extends the feed plate 25 and the reflector plate 26, and arranges the support base 22 and the radiation plate 21 connected thereto according to the array structure, thereby proposing a base station antenna array, such as Figure 5 As shown, it includes a feeding plate 25, a reflecting plate 26, and at least two radiating plates 21. The feeding plate 25 is provided with supporting seats 22 respectively configured for each radiating plate 21, all supporting seats 22 are arranged in an array, and each supporting seat 22 constitutes an antenna unit. The supporting seat 22 and the feeding plate 25 are integrally formed by an injection molding process. A feeding network 24 is laid on the feeding plate 25 and the supporting seat 22, and the port ends of the feeding network 24 are respectively arranged on the top surface of the supporting seat 22. Each antenna unit has substantially the same structure as the base station antenna unit described in the present invention: Figures 1 to 4 As shown, at least two bayonet columns 23 are connected to the top of the support base 22. The bayonet columns 23 are processed with bayonet 231 recessed into the bayonet columns 23, and the top of the bayonet columns 23 is processed with a guide slope 232 inclined toward the bayonet 231. The radiation plate 21 is processed with a bayonet hole 211 configured for the bayonet column 23. The edge of the bayonet hole 211 is elastically connected with a latching tongue piece 212. When installing the radiation plate 21, the radiation plate 21 is pressed against the top of the support base 22 configured for the radiation plate 21, and the top end of the bayonet column 23 is inserted into the bayonet hole 211 of the radiation plate 21. The guide slope 232 guides the latch piece 212 to elastically deform and move toward the bayonet 231. With the help of the elastic restoring force, the latch piece 212 passing through the bayonet 231 extends into the bayonet 231, so that the radiation plate 21 is fixedly connected to the support base 22 by means of the latch piece 212 inserted into the bayonet 231, ensuring that the radiation plate 21 can be coupled with the port of the feeding network 24.

[0031] The structure of each antenna unit in the second embodiment is substantially the same as that in the first embodiment:

[0032] The support seat 22 includes two columnar support sub-columns 221. At least one bayonet column 23 is arranged on each support sub-column 221. Around the axis of the support sub-column 221, the support sub-column 221 includes a rectangular inner facade 2211, a curved outer facade 2212, and two rectangular side facades 2213 respectively connected between the inner facade 2211 and the outer facade 2212. The inner facades 2211 of the two support sub-columns 221 are arranged opposite to each other and are parallel to each other.

[0033] Four bayonet columns 23 are arranged around the axial direction O1O2 of the support seat 22. The bayonet holes 231 of the bayonet columns 23 are all oriented toward the outside of the support seat 22, and the bayonet holes 231 of adjacent bayonet columns 23 are oriented perpendicularly to each other.

[0034] Ports AB and CD of the feeding network 24 disposed on each support base 22 are two groups of mutually orthogonal microstrip balun ports.

[0035] In order to enhance the mechanical strength of the feed plate 25, the second embodiment of the present invention is as follows: Figure 5 As shown, a feed plate edge ridge 251 is provided at the edge of the feed plate 25. At least one feed plate reinforcement ridge 252 is provided in the feed plate 25, and its two ends are connected to the feed plate edge ridge 251, so as to divide the feed plate 25 into at least two feed blocks. At least one support seat 22 is provided in the feed block. In the second embodiment, three feed plate reinforcement ridges 252 are provided in the feed plate 25, and the feed plate 25 is divided into four feed blocks, and three antenna units are provided in each feed block, so as to construct a base station antenna array with 12 base station antenna units.

[0036] In order to enhance the mechanical strength of the reflector 26 and match the structure of the feed board 25, a reflector edge ridge 261 is provided at the edge of the reflector 26. A reflector reinforcement ridge 262 is provided in the reflector 26, and its two ends are connected to the reflector edge ridge 261. The reflector 26 is fixedly mounted on the bottom of the feed board 25, and the position of the reflector edge ridge 261 corresponds to the position of the feed board edge ridge 251, and the position of the reflector reinforcement ridge 262 corresponds to the position of the feed board reinforcement ridge 252.

Claims

1. A base station antenna unit, comprising a radiation plate, a feed plate and a reflector; characterized in that: The feed board is provided with a support seat, and at least two bayonet columns are connected to the top of the support seat; the support seat and the feed board are integrally formed by an injection molding process; a feed network is laid on the feed board and the support seat, and the port end of the feed network is arranged on the top surface of the support seat; The bayonet column is processed with a bayonet recessed into the bayonet column, and the top end of the bayonet column is processed with a guide slope inclined toward the bayonet; The radiation plate is processed with a clamping hole configured for the bayonet column; the edge of the clamping hole is elastically connected with a clamping tongue piece; When installing the radiation board, press the radiation board to the top of the support base, insert the top of the bayonet column into the bayonet hole of the radiation board, guide the latch piece to elastically deform and move toward the bayonet with the help of the guide slope, and extend the latch piece through the bayonet into the bayonet with the help of the elastic restoring force, so that the radiation board is fixedly connected to the support base by means of the latch piece inserted into the bayonet, ensuring that the radiation board can be coupled with the port of the feeding network.

2. The base station antenna unit according to claim 1, characterized in that: The support base comprises two columnar support sub-columns; each support sub-column is provided with at least one bayonet column; Around the axis of the supporting sub-column, the supporting sub-column includes a rectangular inner facade, a curved outer facade, and two rectangular side facades respectively connected between the inner facade and the outer facade; The inner facades of the two supporting sub-columns are arranged opposite to each other and parallel to each other.

3. The base station antenna unit according to claim 1 or 2, characterized in that: Four bayonet columns are arranged around the axial direction of the support seat; The bayonet holes of the bayonet holes columns are all oriented toward the outside of the support seat, and the bayonet holes of adjacent bayonet holes columns are oriented perpendicularly to each other.

4. The base station antenna unit according to claim 1, characterized in that: The ports of the feeding network arranged on the support base are two groups of mutually orthogonal microstrip balun ports.

5. A base station antenna array, comprising a feed plate, a reflector plate, and at least two radiation plates, characterized in that: The feed board is provided with support seats respectively configured for each radiation board, all support seats are arranged in an array, and each support seat constructs an antenna unit; the support seat and the feed board are integrally formed by an injection molding process; A feeding network is laid on the feeding board and the supporting seat, and the port ends of the feeding network are respectively arranged on the top surface of the supporting seat; At least two bayonet columns are connected to the top of the support seat; the bayonet columns are processed with bayonet recessed into the bayonet columns, and the top of the bayonet column is processed with a guide slope inclined toward the bayonet; The radiation plate is processed with a clamping hole configured for the bayonet column; the edge of the clamping hole is elastically connected with a clamping tongue piece; When installing the radiation board, the radiation board is pressed against the top of the support base configured for the radiation board, and the top of the bayonet column is inserted into the bayonet hole of the radiation board. The guide bevel is used to guide the elastic deformation of the latch piece and move toward the bayonet. With the help of the elastic restoring force, the latch piece passing through the bayonet extends into the bayonet, so that the radiation board is fixedly connected to the support base of the feeding board by means of the latch piece inserted into the bayonet, ensuring that the radiation board can be coupled with the port of the feeding network.

6. The base station antenna array according to claim 5, characterized in that: The support base comprises two columnar support sub-columns; each support sub-column is provided with at least one bayonet column; Around the axis of the supporting sub-column, the supporting sub-column includes a rectangular inner facade, a curved outer facade, and two rectangular side facades respectively connected between the inner facade and the outer facade; The inner facades of the two supporting sub-columns are arranged opposite to each other and parallel to each other.

7. The base station antenna array according to claim 5 or 6, characterized in that: Four bayonet columns are arranged around the axial direction of the support seat; The bayonet holes of the bayonet holes columns are all oriented toward the outside of the support seat, and the bayonet holes of adjacent bayonet holes columns are oriented perpendicularly to each other.

8. The base station antenna array according to claim 5, characterized in that: The ports of the feeding network arranged on each support seat are two groups of mutually orthogonal microstrip balun ports.

9. The base station antenna array according to claim 5, characterized in that: A feed board edge ridge is arranged on the edge of the feed board; At least one feed board reinforcement ridge is provided in the feed board, and its two ends are connected to the edge ridges of the feed board, so as to divide the feed board into at least two feed blocks; At least one supporting seat is arranged in the feeding block.

10. The base station antenna array according to claim 9, characterized in that: The edge of the reflector is provided with a reflector edge ridge; A reflector reinforcement ridge is arranged in the reflector, and both ends of the ridges are connected to the edge ridges of the reflector; The reflector is fixedly mounted on the bottom of the feeder plate, and the position of the edge ridge of the reflector corresponds to the position of the edge ridge of the feeder plate, and the position of the enhanced ridge of the reflector corresponds to the position of the enhanced ridge of the feeder plate.

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